Asked by Jamie
A satellite dish has a parabolic cross section and is 6 ft deep. The focus is 4 ft from the vertex. Find the width of the satellite dish at the opening. Round your answer to the nearest foot.
Thank you
Thank you
Answers
Answered by
Reiny
from y^2 = 4px
the parabola has equation:
y^2 = 16x
at its widest point, x = 6
y^2 = 16(36) = 576
y + ±24
so the width = 48 ft
the parabola has equation:
y^2 = 16x
at its widest point, x = 6
y^2 = 16(36) = 576
y + ±24
so the width = 48 ft
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